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From "Aaron Kimball (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1473) Sqoop should allow users to control export parallelism
Date Wed, 10 Feb 2010 21:34:27 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12832215#action_12832215

Aaron Kimball commented on MAPREDUCE-1473:

Failure is in pipes; unrelated

> Sqoop should allow users to control export parallelism
> ------------------------------------------------------
>                 Key: MAPREDUCE-1473
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1473
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/sqoop
>            Reporter: Aaron Kimball
>            Assignee: Aaron Kimball
>         Attachments: MAPREDUCE-1473.patch
> Sqoop uses MapReduce jobs to export files back to a table in the database. The degree
of parallelism is controlled by the number of splits; i.e., the number of input files used.
The bottleneck in the system, though, is likely to be the database itself.
> Users should have the ability to tune the number of parallel exporters being used to
a degree appropriate to their database deployment.

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